LOS COMPONENTES DE UN ECOSISTEMA

 

ECOSYSTEMS

An ecosystem is all the living things that live in the same place,
as well as the physical environment they live in and the relationships between them.

An ecosystem has two components: 

1.  Living things.

These are all the animals, plants, algae, fungi and bacteria that live in the same place. Together, they form the biosphere

-The fauna is all the animals in an ecosystem. 

-The flora is all its plants. 

2. The physical environment.

This is all the non-living components of an ecosystem. It includes the factors that affect living things.

We can find two types of ecosystems: TERRESTRIAL AND AQUATIC ECOSYSTEMS

      1. TERRESTRIAL ECOSYSTEMS:

Living things are surrounded by air. 

The factors that affect living things are temperature, humidity, 

soil and relief.

PRAIRIE	MOUNTAIN
RAINFOREST	DESERT
FOREST	VALLEY

2. AQUATIC ECOSYSTEMS:

Living things are surrounded by water. 

The factors that affect living things are salt water, light, currents, temperature and the seabed. 

CORAL REEF	POND
LAKE	SWAMP
MARSH	RIVER

LIVING THINGS 

All living things are grouped into species. Members of the same species look similar. They can reproduce together, but not with other species. 

A community is all the populations in an ecosystem. 
A population is all the living things of one species that 
live in an ecosystem. 

 

Sing this song to learn more about ecosystems: 

PHYSICAL ENVIRONMENT

Living things depend on their physical environment to survive. Light, humidity and temperature influence the living things in an ecosystem.

• Living things adapt to their environment to survive.

For example, only animals     

and plants that can survive 

in the desert. 

Snakes have adapted to survive in the desert. 

• Many living things change their environment and adapt it to their needs. 

Moles dig holes and tunnels	When tree roots grow through  the soil, they can break stones
Squirrels bury nuts.         When they germinate, tres grow	Some termites build nests using  soil. A nest can be more than  three metres tall.

 IMPORTANCIA DE LA FOTOSÍNTESIS

FOOD CHAIN

Living things need energy in order to live. Animals get energy from the food they eat.Plants use sunlight, water and nutrients to get energy in a process called PHOTOSYNTHESIS.A food chain shows how each living thing gets food, and how nutrients and energy passed from creature to creature.Food chains begin with plant-life, and end with  animal-life. 

CADENA ALIMENTARIA

Relaciones entre los seres vivos

 Living things needs to get nutrients to live, so they can COMPETE or COOPERATE: 

They can be beneficial or harmful.

- Mutualism:      Both species have a benefit. 

- Competition: Both species have the same necesities and they are harmed.

- Parasitism: one organism, the parasite, lives on or in another organism, the host, causing it some harm.

- Comensalism: one species obtains food or other benefits from the other without either harming or benefiting the latter.

Click on here to play some games:

 FOOD CHAIN